Official comment

Aside from having pretty big issues maintaining a connection with the aircraft (which is why I am assuming you are using connectionless) it looks like your SD card might not be keeping up with the imaging needs of your flight plan. You might want to get a better SD card, make sure it is formatted for each flight (at least each mission) and check you SD card write speed in the Settings.
If you ever see the blue verification line not going where you want the aircraft to go you can tap on any corner waypoint to restart there:
https://support.dronesmadeeasy.com/hc/en-us/articles/115005940746-Manual-Restarting-Point
That being said, it probably shouldn't be restarting like that. It looks like it is skipping forward to the next waypoint to restart. We will look into that.